#ifndef INPUT_MANAGER_H
#define INPUT_MANAGER_H

#include <vector>
#include <windows.h>

typedef void ( *KeyHandler ) ( void );
typedef void ( *MouseHandler ) ( int x, int y );

class InputManager
{
	std::vector< int > m_pollKeys;
	std::vector< KeyHandler > m_downHandlers;
	std::vector< KeyHandler > m_upHandlers;
	std::vector< KeyHandler > m_pressedHandlers;

	MouseHandler m_mouseHandler;

	// Polls a vector of keys, removes depressed keys from the vector.
	void PollKeys( );
public:
	InputManager( );
	// Is called by the Windows message handler routine, adds pressed
	// keys to the vector.
	void HandleInput( WPARAM wParam );

	void InstallKeyDown( int vk, KeyHandler handler );
	void InstallKeyUp( int vk, KeyHandler handler );
	void InstallKeyPressed( KeyHandler handler );
	void InstallMouseHandler( MouseHandler handler );

	// Used to remove remove the associated handler from the vector.
	void UninstallKeyDown( int vk );
	void UninstallKeyUp( int vk );
	void UninstallKeyPressed( int vk );
	void UninstallMouseHandler( );
};

#endif


















// ------------------------
















#include "InputManager.h"

void InputManager::HandleInput( WPARAM wParam )
{
	if ( m_downHandlers[wParam] != NULL )
	{
		// Call the key-down handler.
		m_handlers[wParam]( );
		// Set up the pressed key for polling.
		m_pollKeys
		
	}
}

void InputManager::PollKeys( )
{
	// Poll all pressed keys.
}

InputManager::InputManager( )
{
	for ( int i=0; i<0xFF; i++ )
	{
		m_downHandlers.push_back( NULL );
		m_upHandlers.push_back( NULL );
		m_pressedHandlers.push_back( NULL );
	}
}

void InputManager::InstallKeyDown( int vk, KeyHandler handler )
{
	m_downHandlers[vk] = handler;
}

void InputManager::InstallKeyUp( int vk, KeyHandler handler )
{
	m_upHandlers[vk] = handler;
}

void InputManager::InstallKeyPressed( int vk, KeyHandler handler )
{
	m_pressedHandlers[vk] = handler;
}

void InputManager::UninstallKeyDown( int vk )
{
	m_downHandlers[vk] = NULL;
}

void InputManager::UninstallKeyUp( int vk )
{
	m_upHandlers[vk] = NULL;
}

void InputManager::UninstallKeyPressed( int vk )
{
	m_pressedHandlers[vk] = NULL;
}